1-(hydroxylakylaminoalkylamino)-4-methylxanthones and their preparation



Patented Mar. 10, 1953 l (HYDROXYALKYLAMINOALKYLAMINO) 4-METHYLXANTHONES AND THEIR? PREB- ABATION Sydney Archer, Albany, N. Y., assig'noito, Sterling Drug Inc., New York, N. feoi poratiori ljf Delaw r No Drawing. Application January. 31;; 1352,

' Serial No. 2fi9 3,5

20 Claims. 1 .1 .5 icy-wh ps rela es t9 1- 3l i? .yel1s r amieoalkylaeiasl- -vmethr ranth es and, t heir re a n.- Par c lar. t relates to anth nes havi g t e tru ural. eted? .3 t NH X;;N;'/

where R is hydrogen, a halo group, a lower alkyl radical or a lower alkqxy radical, X is a lower alkylene. radical having its two connecting linkages on adjacent carbon atoms, R1 is hydrogen or a lower alkyl radical and R2 is a lower Z-hydroxy alkyl radical. The compounds of my invention are'useful as chemotherapeutic agents, for in? stance, s agents for treating schistosomiasis.

In the above structural formula B, when halo, means chloro, bromo, iodo and fluoro. R, when lower alkyl, and R1, when lower alkyl, each have preferably from 1 4 carbon atoms inclusive, including such radicals as methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl and Z-butyl. 'B, when lower alkoxyl, has preferably from 14 car-. bon atoms inclusive, including such radicals as methoxy, ethoxy, n-propoxy, isopropo xy, nbutoxy, isobutoxy and 2 buto: fy. R2 the lower 2-hydroxyalkyl has a hydroxy group, attached to the earbon atom that isone carbonatom re: removed from the side chain nit re g eni atom. and of such 2-hydmxyalkyl radicals," thosijhaving 2:4

carbon atoms inclusive are prejerr'ed, such as -hy r Xy t yl, 2 -hvdroxyprdpy1. hrd q v-Z- ethyl t Z' Y IQX- WWL d he i Th lower alkylene radical, designated hereinabove as X, has preferably fro m 2 4 carben atoms. in

elusive. X thus is such radicals as CH H1 H H H QH -CH( CI-k) CH(CH3) and Tommie) 0-H;-

M mp n are P e r d by hea in refe b in r l n y di a atmo phe ic Pre Sure, a h mryel w ee ie al i amme ha in t e ormul RiazN NHa with a 49 me liy xan n ha n ee f mu a (i1) liialog'en where R, 121,32 and Xha e. the mean ngs eebromo, iodo and fiuoro.

"Illustrations ofthe compounds and proeess of my invention are the preparation of: 1-'[-2-(2- hydroxyethylamino) ethylaminol 4 methyl -6- iodoxanthone hydrochloride.v by heating 2;- 2-hydroigyethyla'mineiethylamine "with '1' r '4- amino l -2 -propyjla'minef with 1 isobutoxyxanthone. j

My "'1 (hydroxyallgylaminoalkylamino) 1 methylxanthones are therapeutically active whether employed as the free, bases or; asftl ieir. salts with relatively non-tome organic: or! mar; ganic acids, although most cases the salt form is more convenient to employ; "If found it @111: venient to isolate my eompounds as thehydroihalides, especially the. hy'drochlorides. However, he acid, ad t n. salt a w th n h 51:99.? of y n i such, sa ts cludi the phates, sultates, citrates, ethanesulf onates, tar Hates, uc neies et te beam l. made: lates,'o1eates, and the like.

cifi embe m ntso m nv io 311 ther illustrated in the following. examples:

4- N'-e kiw dr ck?wqhylmwlamiee To a solution of ethylamine in methanol (1450 ml. of 25.6%) which was cooled to 5! 0., there was added dropwise with stirring 144 g. ofisobutylene oxide. The temperature rose to '40? 'C. during the addition. The mixture was stirred for sixteen hours at room temperature and then distilled. The product, N-ethyl-N-Z-hydroxy-Z': methylpropylamine, boiled at 76- 77? C. at 40 mm. and weighed 177 g. (77%).

Anal. "calcd, for CGH15NQ.Z N, 11.95. N, 11.58. i

A mixture of 1'10 g. of 2 bromoeth lphthalimide, 174 of 'N:ethy11N: :hyd y:2:m thyk propylamine and 5125 ml. of dry xylene was I835 fiuxed for seven hours. The mixture was cooled and filtered. The filtrate was concentrated to re: move xylene and the esidue. was dissolved i Found 650 ml. of ethanol. The solution was heated with stirring and treated with 53 g. of 85% hydrazine hydrate. After three hours the mixture was concentrated to dryness. The complex was dissolved in water and made acid with hydrochloric acid. The phthalhydrazide was collected, pressed dry and washed with a liberal quantity of ethanol. The combined filtrates were taken to dryness and the residue of diamine hydrochloride was dissolved in a minimum quantity of water and then treated with solid potassium hydroxide until separation of the oil layer was complete. The oil layer was then removed and the aqueous phase was extracted with ether. The oil layer was combined with the ether extracts and the resulting ether solution was dried over potassium hydroxide and distilled. The product, 2-(N- ethyl N 2 hydroxy 2 methylpropylamino) ethylamine, boiled at 79-80" C. at 3.0 mm. Anal. calcd. for Cal-120N202 N, 17.47. N, 17.21.

c. 1-[2 (N-ethyZ-N-Z-hydroxy-Z-methylpropylamino)ethylaminol-4-methyl 6 chloroaranthone A mixture of 7.0 g. of 1,6edichloro-4-methylxanthone, 6.0 g. of 2-(N-ethyl-N-2-hydroxy-2- methylpropylamino)ethylamine and 6.0 ml. of dry pyridine was refluxed overnight. To the reaction mixture was added 3 ml. of 50% potassium hydroxide and the resulting mixture was distilled. The residue was cooled, diluted with water and taken up in chloroform. The chloroform was removed by distilling in vacuo and the residue was boiled with dilute acetic acid, and the acid solution was filtered to remove the unreacted 1,6- dichloro-4-methylxanthone. The filtrate was made basic with 35% aqueous sodium hydroxide and the product that separated was extracted with chloroform. After the chloroform had been removed by distilling in vacuo, the residue was taken up in absolute ethanol and the ethanolic solution was treated with ethanolic hydrogen chloride and absolute ether. The gummy hydrochloride which separated crystallized on standing. It was recrystallized twice from absolute ethanol-ether, yielding the product, l-[2- (N-ethyl-N-Z-hydroxy 2 methylpropylamino) ethylamino]-4-methyl-6-chloroxanthone as the hydrochloride, M. P. 210.4-2124 C. (con) Anal. calcd. for C22H21C1N2O3.HC12 N, 6.38; Cl, 16.14. Found: N, 6.20; Cl, 15.99.

l-[2-(N ethyl-N-Z-hydroxy-2-methylpropylamino) ethylamino] -4 methyl-fi-chloroxanthone in free base form is obtained by treating an aqueous solution of its hydrochloric with alkali, e. g., 35% aqueous solution of sodium hydroxide, extracting the product thereby liberated with chloroform and removing the chloroform by distilling in vacuo.

When 1-chloro-4,6-dimethylxanthone or 1- chloro-4-methyl-6-methoxyxanthone is used instead of 1,6-dichloro-4-methylxanthone in the foregoing preparation, the resulting product is 1-[2-(N-ethyl-N-2-hydroxy 2 methylpropylamino) ethylamino]-4.,6-dimethylxanthone or 1- E 2- (N -ethyl-N -2-hydroxy-2-methylpropylamino) ethylaminol-4-methyl-6-methoxyxanthone, respectively.

Other 1 [2- (N-ethyl-N-2 -hydroxy-2 -methylpropylamino) ethylam'inol -4 methyl-G-haloxanthones can be prepared according to the procedure given above, but using other 1,6-dihalo-4- methylxanthone in place of 1.6-dichloro-4-methylxanthone. Thus, using lfi-dibrqmo--methyl Found:

xanthone or 1-chloro-4-methyl-6-bromoxanthone there is obtained l-[2-(N-ethyl-N-2-hydroxy 2 methylpropylamino)ethylaminol-4- methyl-G-bromoxanthone in the form of its hydrobromide or hydrochloride addition salts, respectively. Using 1,6-diiodo-4-methylxanthone or 1-chloro-4-methyl6-iodoxanthone there is obtained 1- [2- (N-ethyl-N-2-hydroxy-2-methylpropylamino) ethylaminol -4-methyl-6-iodoxanthone in the form of its hydroiodide or hydrochloride addition salts, respectively.

EXAMPLE 2 A. N-n-butyZ-N-Z-hydro.rypropylamine A solution of 145 g. of n-butylamine and 400 ml. of methanol was heated to reflux. The source of heat was removed and 112 g. of propylene oxide was added at such a rate that gentle reflux was maintained. After all of the oxide had been added. the solution was heated for an additional hour and then distilled, first at atmospheric pressure to remove the solvent and then at 20 mm. The fraction, boiling at 98-100 C. and weighing 134 g. (52%), was the desired product, N-n-butyl-N-2- hydroxypropylamine.

Anal. calcd. for CvHvzNO: N, 10.67. Found: N, 10.62.

There was also obtained g. of a higher boilin oil which presumably was the tertiary-amine, N,N-di-n-butyl-N'-2-hydroxypropylamine.

B. 2-(N-n-butyZ-N-Z-hydromypropyldmino) ethylamine A mixture of 102 g. of 2-bromoethylphthalimide, 109 g. of N-n-butyl-N-2-hydroxypropylamine and 240 ml. of dry xylene was refluxed for ten hours. The mixture was cooled and filtered. The filtrate was concentrated to remove xylene and the residue dissolved in 400 ml. of ethanol. The solution was heated to boiling with stirring and treated with 32 g. of hydrazine hydrate. After three hours the mixture was concentrated to dryness. The complex was dissolved in water and made acid with hydrochloric acid. The phthalhydrazide Was filtered, pressed dry and washed with a liberal quantity of water. The combined filtrates were taken to dryness. The residue of diamine hydrochloride was dissolved in a minimum quantity of water and then treated with solid potassium hydroxide until the oil layer which separated did not increase in size. The oil layer was removed and the aqueous phase extracted with ether. The combined organic layers were dried over potassium hydroxide and distilled. The product, 2-(N- n-butyl-N 2 hydroxypropylamino) ethylam'ine, boiled at 109-111 C. (3 mm.) and weighed 35 g. (53%).

Anal. calcd. for C9H22N20: N, 16.07. Found: N. 15.93.

C. I-EZ-(N-n-butyZ-N 2 hydroxypropylamino) ethylaminol -4-methyZ-6-chloroxcmthone This preparation was carried out following the procedure given in Example 10, but using 5.7 g. of 1,6-dichloro-4-methylxanthone, 5.7 g. of 2-(N- n-butyl-N 2 hydroxypropylamino)ethylamine and 5.5 ml. of dry pyridine. The product, 1-[2- (N-n-butyl-N 2 hydroxypropylamino)ethylamino] -l-methyl-6-chloroxanthone as the hydrochloride, sintered at about 112 C. and then melted at l38-143 C. (con) when recrystallized from absolute ethanol-absolute ether.

Anal. calcd. for C23H29C1N203.HC1: N, 6.18; Cl, 1 .6 u 5.90; 01, 15.68.

acme

A. 2-(N-methyl-N-Z-hydroxypropylaminolethylamine This preparation was carried out following the procedure given in Example 2B, but using 204 g. of 2-bromoethylphthalimide, 148 g. of N-methyl- N-(2-hydroxypropyllamine and '500 ml. of dry xylene with a reflux period of seven hours. The product, z-(N-m-ethyl-N 2 hydroxypropylamino)ethylamine, boiled at 81413 0. (2.0 mm.) and Weighed 60.0 g.

Anal. 'calcd. for CeHrsN'zO! N, 21.20. Found: N. 20.50.

B. 1-[2-(N-methzrZ-N 2 hydroxypropylamino) efhylamino] -4-methyZ-6-chlomomanthone EXAMPLE 4 A. N-ethllZ-N-ZJuldrozyethylaminoacetone This preparation was carried out using a modification of the method of Breslow et a1. lJACS'68, 100 (1946) A solution of 125 g. of N-ethyl-N- Z-hydroxyethylamine and 75 ml. of ether was added dropwise to a warmed solution of 63 g. of chloroacetone and 75 ml. of ether. The addition required one hour. The mixture was then refluxed for three hours more, after which time the N-ethyl-N-2-hydroxyethylamine hydrochloride had separated as an oily layer. After the amine salt layer had been removed, the ether layer was distilled, yielding the product, N- ethyl-N-2-hydroxyethylaminoacetone, which distilled at 48-49 C. at 1 mm. and weighed 56 g. (54%).

Anal. calcd. for C7H15N022 N, 9.60. N, 10.06.

B. I-(N-ethyl N z hydroscyethylamino)-2- propylamine A solution of 94 g. of N-ethyl-N-z-hydroxyethylaminoacetone in 500 m1. of 15% methanolic ammonia was hydrogenated at 70 C. at 450 p. s. i. in the presence of Raney nickel catalyst. Reduction was complete in seven hours. The catalyst was filtered off and the filtrate distilled.

Found t After a forerun of 18.4 g., B. P. 64-69? C. (0.4-

mm.), there was obtained 56.3 g. (59%) of the pure diamine, 1-(N-ethyI-N-2-hydroxyethylamino) -2-propylamine, B. P. 69-705" C. (0.4 mm.).

Anal. calcd. for CvHmNzO: N, 19.27. Found: N, 19.01.

C. 1 [1- (N-ethyl-N-z hydromyethylaminol -2" prom/lamina]-4-methyl16-chloroxanthone N2-hydr0wsthlamindl '2' procylaminol -4- methyhfi-chloroxanthone as the hydrochloride.

Other l-ll-(N-ethyl-N- 2 hydroxyethylamino) -2-propylamino]-4-methylxanthones can be prepared according to the above procedure, using other l-halo-i-methylxanthones in place of 1,6- dichloro 4 methylxanthone. Thus, 1-[1-(N- ethyl-N-2-hydroxyethylamino) -2-ipropyla'minol 4 nethylxanthone, 1- [1- (N-ethyl-N-2-hydroxyethylamino)-2 propylaminol-4;6 dimethylxanthone and 1- [1- (Nethyl-N-2-hydroxyethylamino)-2-propy1aminol-4-methyl-.6 methoxyxanthone are formed using 1-chloro-4-methylxanthone, 1-chloro-4,6-dimethylxanthone and 1- chloro-4-methyl-6methoxyxanthone, respectively.

EXAMPLE 5 A; 2- (N-n-butyl-N-Z-hydrowyethylamino) ethylamine This preparation was carried out according to the procedure described hereinabove in Example 23, but using 51. g. of Z-bromoethylphthalimide, 47.5 g. of N-n-butyl-N-2 hydroxyethylamine and ml. of dry xylene, with arefiux period of ten hours. The product, 2-(Nn-butyl-N-2-hydroxy ethylamino)ethylamine, boiled at 145-147.5 C. at 21 mm.

Anal. calcd. for Cal-120N202 N, 17.42. Found: N, 17.08. 1

B. 1- [2- {N-n-butyl-N-z-hydroryethylamino) ethylamino]-4-methylfB-chloromanthone This compound can be prepared following the procedure described hereinabove in Example 1C, but using 7.0- g. of 1,6-dichloro-4-methylxanthone 6.0 g. of 2-(N-n-butyl-N-2-hydroxyethy1- amino) ethylamine and 6.0 ml. of dry pyridine. The product thus obtained is 1-[2-(N-n-butyl-N- Z-hydroxyethylamino) ethylaminol -4'-methyl 6- chloroxanthone, as the hydrochloride.

Other 1 [2 (N-n-butyl N-2-hydroxyethylamino)ethylaminol-4-methylxanthones can be prepared according to the above procedure, using other 1-halo-4-methylxanthones in place of 1,6- dichloro-4-methylxanthone. Thus, 1 [2 (N n butyl-N-2 hydroxyethylamino)ethy1amino]4- methylxanthone, 1- [2- (N-n-butyl-N-Z-hydroxyethylamino) ethylamino] 4,6 dimethylxanthone and 1 [2-(N-n-butyl-N-2-hydroxyethy1amino) ethylaminol -4-methyl 6 methoxyxanthone are formed using 1 chloro-4-methylxanthone, lchloro 4,6 dimethylxanthone and 1-chloro-4- methyl:fi-methoxyxanthone, respectively.

EXAMPLE 6 A. 2- (N-ethyl-N-Z-hydrozvyethylamino) ethylamine This preparation was carried out following the procedure described hereinabove in Example 23, but using g. of 2-bromoethylphthalimide, 98 g. 01' N-ethyl-N-2-hydrcxyethylamine and 310 ml. of dry xylene. The product, Z-(N-ethyl-N- 2-hydroxyethylamino ethylamine, distilled at 74-75 C. (0.7 mm.) and weighed 30.2 g. (45%).

Anal. calcd. for CsHisNzO: N, 21.20. Found: N, 21.10.

B. I-[Z-(N-ethyZeN 2 fiddromyethylamino) ethyl-amino] -4-mcthyl-6-chloroxanthone This preparation was carried out following the procedure described hereinabove in Example 10, but using 3.8 g. of 1.6-dich1oro-4-methylxanthonc. 3.8 g. of 2-(N-ethyl-N-2hydroxyethy1- amino) ethylamine and-3.8 .ml. of dry pyridine.

EXAMPLE 7 1-[2-(N ethyl-N 2 hydrozryethylamino) ethyl amino] -4,6-dimethylranthone This compound was prepared according to the directions given above in Example 10, but using 5.5 g. of 1-chloro-4;6-dimethylxanthone, 5.0 g. of 2 (N-ethyl-N-2-hydroxyethylamino) ethylamine and 5.0 ml. of dry pyridine. The product, 1-[2- (N ethyl-N-2-hydroxyethylaminol ethylaminol 4,6-dimethylxanthone, as the. hydrochloride, melted at 197.4-199.3 C. (con) when recrystallized from absolute ethanol.

Anal. calcd. for C21H26N203.HC1I C, 64.52; H; 6.96; N, 7.17. Found: C,- 64.44; H, 6.94; N, 6.96.

Other 1-[2-(N-ethyl-N 2 hydroxyethylami no) ethylamino] -4-methyl-fi-alkylxanthones can be prepared following the directions given above but using other 1 halo-4-methyl-6-alkylxanthones in place of 1 chloro-4,6-dimethylxanthone. Thus, using l-bromo-4-methyl-6-ethyi xanthone, l-iodo-4-methyl-6-isopropylxanthone, 1 chloro-4-methyl-6-n-butylxanthone and l chloro-4-methyl-6-isobutylxanthone, there is obtained 1- [2- (N-ethyl-N-Z-hydroxyethylamino) ethyla-minol -4-methyl 6 ethylxanthone hydro bromide, 1- [2- (N -ethyl-N 2 hydroxyethylami no) ethylamino] -4-methyl-6 isopropylxanthone hydroiodide, 1-[2-(N-ethyl-N-2 hydroxyethylamino) ethylaminol -4-methy1-6-n-butylxanthone hydrochloride and 1-EZ-(N-ethyl-N-Z-hydroxyethylamino ethylaminol 4-methyl-6-isobutylxanthone hydrochloride, respectively.

EXAMPLES I l 1 i2 (N-ethyl-N-2-hydroxyethylamino)ethyl amino] -4-methyl-fi-bromoczanthone 1 [2 (N-etItyZ-N-Z-hydroxyethylamiho)eth ilie.

amino] -4-methyZ-6-bromoxanthone This compound was prepared following theprocedure described above in Example 16, but using 6.0 g. of 1-ch1oro-'4 methyl-fi-methoxyxanthone, 4.8 g. of 2-(N--ethyl-N-2-hydroxyethylamino).a ethylamine and 6 m1; of dry pyridinel The prod---. not, 1 E2-(N-ethyl-N-2-hydroxyethylamino) ethylaminol. 4 methyl-fi methoxyxanthone,' in

8 the form of the hydrochloride, melted at 185.5-1880" C. (con) when recrystallized from absolute ethanol.

Anal. calcd. for C21H26N2O4.HC12 N, 6.89; Cl,

8.71. Found: N, 6.36; Cl, 8.90..

Other 1 [2 (N ethyl-N-2-hydroxyethyl amino) ethylaminol 4 methyl 6 alkoxyxanthones can be prepared according to the procedure given above, but using other 1-halo-4- methyl-fi-alkoxyxanthones in place of l-chlorofl-methyl 6 methoxyxanthone. Thus, using 1-bromo-4-methyl-6-ethoxyxanthone, l iodo-4- methyl 6 n: propoxyxanthone, 1 chloro-4- methyl-6-isobutoxyxanthone and 1 chloro-4- methyl-fi-n-butoxyxanthone, there is obtained 1 2 (N-ethyl-N-2-hydroxyethy1amin0)ethylamino] 4 methyl-S-ethoxyxanthom hydrobromide, 1-[2(N-ethyl N 2 hydroxyethylamino) ethylamino] 4-methyl-6-n-propoxyxanthone hydroiodide, 1-[2-(N ethyl-N-2-hydroxyethylaminolethylamino] 4 methyl 6 isobutoxyxanthone hydrochloride and 1-[2-(N-ethy1- N 2 hydroxyethylamino) ethylamino] 4- methyl-6-n-butoxyxanthone hydrochloride, respectively. v

EXAMPLE 10 1 2 (N-ethyZ-N-Z-hydroryethylamino) ethylaminol--metlzy'lmnthone This preparation was carried out following the procedure described above, inExample 10, but using 6. 0 g. of 1-chloro 4 methylxanthone, 6,0 g. of 2 '(N-ethyl-N'-2 hydroxyethylamino) ethylamine and 60ml. of dry pyridine. The product, 1 [2 (N-ethyl-N-2-hydroxyethylamino).ethylaminol-4-methylxanthone, as thexhydrochloride, melted at 1'78.1-18l.5 C.'.(cor.) when recrystal-i lized from absolute ethanol.

Anal. calcd. for C2oH24N203l-IC1I Cl, 9.41; N, 7.43. -Found:. Cl, 9.67; N, 7.29.

EXAMPLE 11 A. 2 (N-et hyZ-NQZ-hydroa:ypropylamino)ethyl amine B. 1-[2 (N-ethyl-N-Z-hydroa:ypropplamin0) ethg/Zamz'no -4-mcthyZ-6-chloromanthone This preparation was carried ,out following the procedure described above in Example 1C, but using 7.0 g. of .1,6-dichloro-4-methylxanthone, 6.0 g. of 2-(Nethyl-N-2hydroxypropylamino)- ethylamine and 6.0 ml. of dry pyridine. The product, 1-[2- (N- ethyl N 2 hydroxypropylamino) ethylaminol -4-methyl-6-chloroxanthone, in the form of I the hydrochloride, melted at 169.7-1'72.7 C. (con) (sintered at 154 C.) when recrystallized from absolute ethanol.

Anal. calcd. for Cz1I-I2 C1NgOaHCl: N, 6.59; Cl, 16.68. Found: N, 6.71; Cl, 16.89.

EXAMPLE 12 g A. z-(z-hydroxybutylamifio) ethylamine The general procedure of Kitchen'and Pollard [J.- Org. Chem. 8, 342' (1943)] was followed. Twenty-seven grams of 1,2-epoxybutane-was' i msenrieiiedi'azninew an" I 1:6 69 garter all the once has been added, p; m xtu e; was heated to '75" 0., held ther three hou s an then distilled. There was i-'e'byered 71.08MB; or ethyl enediamine; The product, 2' 2' hydroiiybutyl amino) ethYlhfifi; boiled at 102 (3 and weighed 363g. Q v I Anal. calc'd. for e6Hl6N26Z N, 21.20. Found:

1 iihi i tiil ifiifii ii eiizimihdi-4- methgJZ-G-chloroxanthone This preparation carried out following he procedure described in Exampre' 1'6; but using 6.0 g. of 1,6-dichloio 4 mthylifantlioiie, 6.0" g; of 2-(2-hydroxybutylamino) ethylamine and 6:01 of dry pyridine; The proer ca g[2 i2 hydr6 ybutylamino)ethylaminolfinietliyl 4 6 Z chldr'o' xarithone; as the hydroch oride, iiielted at. K

EXA' LMPLE 13 1 [2- (2-hydroxypropylaflfinol''thylaminol 4-meth1 Zranthone This preparation was carried out following the procedure described above in Example 1C, but using 6.0 g. of 1-ch1oro-4-methylxanthone, 6.0 g. of 2-(2-hydroxypropylamino)ethylamine and 6.0 ml. of dry pyridine. The product, 1-[2- (2 hydroxypropylamino) ethylamino] -4-methylxanthone, as the hydrochloride, melted at 203.6-205.0 C. (cor.) when recrystallized from absolute ethanol.

Anal. calcd. for C19H22N2O3.HC1: C, 62.89; H, 6.39; N, 7.72. Found: C, 63.14; H, 6.67; N, 7.98.

EXAMPLE 14 1 [2 (2 hydrozry 2 methylpropylamino) ethylamino]-4-methyl-6-chloromanthone This preparation was carried out following the procedure described above in Example 10, but using 7.0 g. of 1,6-dichloro-4-methylxanthone, 7.0 g. of 2-(2-hydroxy-2-methylpropylamino)- ethylamine and 6.0 ml. of dry pyridine. The product, 1 [2 (2 hydroxy 2 methylpropylamino) ethylamino] 4 methyl 6 chloroxanthone, as the hydrochloride, melted at 254.2- 254.8 C. (cor.)

Anal. calcd. for C20H24C1N203.HC1: C, 58.40; H, 5.88; N, 6.81. Found: C, 58.70; H, 5.77; N, 6.64.

EXAMPLE 15 1 [2 (2 hydroxy 2 methylpropylaminmethylamino] -4-methyl:nanthone This preparation was carried out following the procedure described above in Example 1C, but using 6.5 g. of l-chloro-4-methylxanthone, 6.5 g. of 2 (2 hydroxy 2 methylpropylamino) ethyl- 23,661 {iii amine and 617ml. bf dry pyridine. product, 1 [2 (2 hydrdxy 2 methylpropylamino) ethylamino]-4-methylxanthone, as the hydrochloride, melted at 220.0-221,5 C. (cor.)

Anal. came. for C2OH24N203.HC1Z ,C, 63.73; H, 6.69; N, 7.43. Found: C, 63.57; H, 6.57; N, 7.23.

EXAMPLE 1s 1 [2 (2 hydroxypropylm nino)ethylaminol- 4-methyZ-6-chl0roxanthone This preparation was carried out following the procedure described abovein Example 1C, but using 6.0 g. of 1,6-dichloro 4-methylxanthone, 6.0 g. or 2' (2-hydroxypropylamino) ethylamine and 6.0 ml. of dry pyridine. The product, 1-[2- (Z-hydroxypropylamino) ethylaminol 4; methyl-6-chloroxanthone, as the hydrochloride, melted at 227-230 C. (cor.) when recrystallized from absolute a Anal. calcd? rdr' ciimioimomch c; 57.44; H, 558; N, 7.05. Found: C; 57.30; H," 5.73; N, 7.07.

EXAMPLE 17 1 [2 (2 hydromybutylamino)ethylaminol- 4-methylzcanthone This preparation was carried out following the procedure described above in Example 1C, but using 6.0. g. of 1-chldro-Pmethyhiantlione, 6.0 g. of. 2- 2-ihydroxybutylamino) ethylaniine and 6.0 ml. of dry pyridine. The product; 1-'E2-(2'-hy-' droxybutylamino)ethylamindla 4 iri'ethylxanthone, as the hydrochloride, melted at 191.0- 191.6 C. (cor.) when recrystallized twice from absolute ethanol and once from absolute ethanolabsolute ether.

Anal. calcd. for C2oI-I24N2O3,HCl: C, 63.73; H, 6.69; N, 7.43. Found: C, 64.02; H; 6.57; N, 7.53.

I claim: p v

l. A xanthone having the-formula where R is a member of the group consisting of hydrogen, halo groups, lower alkyl radicals and lower alkoxy radicals, X is a lower alkylene radical having its two connecting linkages on adjacent carbon atoms, R1 is a member of the group consisting of hydrogen and lower alkyl radicals and R2 is a lower 2-hydroxyalky1 radical.

2. A compound according to claim 1 where R. is halogen and R1 is a lower alkyl radical.

3. A compound according to claim 1 where R and R1 are each lower alkyl radicals.

4. A compound according to claim 1 where R is a lower alkoxy radical and R1 is a lower alkyl radical.

5. A compound according to claim 1 where R is halogen and R1 is hydrogen.

6. A xanthone having the formula lower alkyl) 6') NHOHQOHQN 0 (lower 2-l1ydroxyalkyl) 7. A xanthone having the formula )Iowe! alkyl) NHCHzCHzN y? (lower 2-hydroxyalkyl) O O 8. A xanthone having the formula )lower alkyl) NHCHaCHzN 0 g (lower2-hydroxyalkyl) CHaOl l 9. A xanthone having the formula NHC H C HeNHGower 2-hydroxyalkyl) p 11. The process of preparing a xanthone having the formula C Eli where R is a member of the group consisting of hydrogen, halo groups, lower alkyl radicals and lower alkoxy radicals, X is a lower alkylene radical having its two connecting linkages on adjacent carbon atoms, R1 is a member of the group consisting of hydrogen and lower alkyl radicals and R2 is a lower 2-hydroxya1ky1 radical, which comprises heating a 1-halo-4-methyl-6-R-xanthone with a diamine having the formula, R1R2NX-NH2.

12. A process according to claim 11 where R is halogen and R1 is a lower alkyl radical.

13. A process according to claim 11 where R and R1 are each lower alkyl radicals.

14. A process according to claim 11 where R is a lower alkoxy radical and R1 is a lower alkyl radical.

15. A process according to claim 11 where R is halogen and R1 is hydrogen.

16. A process of preparing l-[2-(N-ethyl-N-2- hydroxy 2 methylpropylamino)ethylaminol-a 4-methyl-6-chloroxanthone, which comprises heating 1 ,6-dichloro-4-methylxanthone with 2- (N ethyl N 2 hydroxy 2 methylpropylamino) ethylamine.

17. 1 [2 (N ethyl N 2 hydroxyethylamino)ethylaminol 4 methyl 6 chloroxanthone.

18. 1 [2 (N ethyl N 2 hydroxyethylamino) ethylamino] 4,6 dimethylxanthone.

19. 1 [2 (N ethyl N 2 hydroxyethylamino)ethylaminol 4 methyl 6 methoxyxanthone.

20. 1 [2 (2 hydroxy 2 methylpropylamino(ethylamino] 4 methyl 6 chloroxanthone.

SYDNEY ARCHER.

No'references cited. 

1. A XANTHONE HAVING THE FORMULA 